First of all, great article!<p>>"By turning my typewriter into a computer, I was able to recreate the experience of using a teletype. Now I know what it was like to use Unix in the 1960s when it was originally being developed!"<p>Indeed! This is an experience that will NOT be had by most CS students or programmers in general! And yet, it is a fundamental understanding that the early computers did not have monitors, GUIs, mice -- or even monochrome text terminals and keyboards!<p>Nope!<p>You had a headless computer, DIP switches (of some sort), and something like a teletype (text printer/text typewriter) for output... and that's all you had...<p>Anyway, great article!